Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Tue Jun 3 18:24:28 2025 Auto Mode Machine = Linux oleg360-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg360-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 14206 27985 901377 1226821 64 8 20552 53689 1518251 1013707 64 16 29466 104052 1304314 2006158 64 32 27538 117435 1304314 2133730 64 64 27691 201255 1562436 2379626 128 4 22836 39470 1217930 1243315 128 8 26890 63581 914904 1658003 128 16 39925 97705 1967960 1642783 128 32 46127 105791 1487977 1424795 128 64 48577 159792 1603529 1543594 128 128 55246 241963 1543594 1598754 256 4 26294 37592 999940 1163562 256 8 42881 74442 1591186 1552085 256 16 51148 66183 1924938 1718521 256 32 69983 151022 2205688 2247235 256 64 70837 174399 1881098 1790149 256 128 85619 208988 1683493 1704877 256 256 70175 223751 1642294 1881098 512 4 28780 44491 857345 954944 512 8 42988 61605 1417662 1689859 512 16 67554 71798 1803387 1150968 512 32 76260 137599 1801873 1910902 512 64 98252 150723 2196227 1672748 512 128 71179 218422 1510391 2097550 512 256 84824 183580 1992458 1795846 512 512 134699 198147 2460437 2039772 1024 4 33927 35182 1102176 1096268 1024 8 46012 61914 1418508 1521524 1024 16 64908 67258 1556257 1695735 1024 32 92888 133646 1653942 2115949 1024 64 121282 190584 2133821 2103514 1024 128 143520 201378 1950656 1981251 1024 256 156051 213374 1544504 1646334 1024 512 155553 245443 2133821 2056183 2048 4 34591 38085 1065510 1080113 2048 8 50681 63658 1362442 1532875 2048 16 72968 96831 1550304 1643753 2048 32 102877 147254 1779262 2104960 2048 64 105566 184706 1967097 2142232 2048 128 137300 229875 1664778 2104444 2048 256 165121 268202 1844994 2193096 2048 512 188046 268311 2058551 1728424 4096 4 38740 41684 1057886 1071143 4096 8 54641 64252 1386613 1554485 4096 16 90517 107051 1411911 1616349 4096 32 126369 157903 1854315 1848330 4096 64 127502 165374 1639643 1624143 4096 128 152351 226546 1822062 2151300 4096 256 175598 172601 1555611 1801994 4096 512 186377 272701 2056285 2327326 8192 4 38045 41075 1088476 1051759 8192 8 56049 65726 1167633 1238777 8192 16 84143 98688 1520691 1550963 8192 32 119152 149530 1550613 1659986 8192 64 127543 177515 1526637 1625357 8192 128 169371 215222 1934800 2127827 8192 256 177708 217716 1868209 1740367 8192 512 186720 246486 1982581 2110833 16384 4 36976 39619 1124800 1105297 16384 8 60246 64989 1391172 1316621 16384 16 86232 100252 1477240 1615453 16384 32 116478 148764 1623008 1631524 16384 64 124769 152041 1502859 1668118 16384 128 160547 206031 1700648 1717952 16384 256 155944 234583 1851937 1768576 16384 512 161080 225541 1774330 1868808 32768 4 34292 39423 957543 942939 32768 8 58207 69664 1253218 1221551 32768 16 77300 101460 1224882 1410645 32768 32 104008 136553 1600550 1572585 32768 64 151387 182754 1907793 2015151 32768 128 164185 206186 1753141 1753410 32768 256 166395 211192 1814116 1815003 32768 512 184338 231428 1916706 1832060 65536 4 36947 38412 913125 971304 65536 8 46918 61768 1317040 1417672 65536 16 75777 100587 1377959 1245313 65536 32 112621 135195 1717226 1584212 65536 64